In The Man Who Killed Kennedy: The Case Against LBJ, Stone lays the half-century-old murder at the feet of Kennedy’s vice president, who Stone claims “had John F. Kennedy murdered and then as president used those powers to cover up the murder.”

Among the facts Stone says he is giving a full airing for the first time are Lyndon B. Johnson’s alleged complicity in at least six other murders, including that of a Department of Agriculture official who had been investigating a close Johnson associate and that of his own sister, Josefa Johnson, who Stone says “was a fairly high-profile bisexual at the time.”